如何在沒有實際完成的情況下關閉活動？

Question

我想：

open 1, 2, 3 activities 
1 > 2 > 3 

back to #2 
1 > 2 

open #4 activity 
1 > 2 > 4 

back to #2 
1 > 2 

restore #3 activity 
1 > 2 > 3 

「恢復」是指開放之前關閉的活動而無需重新創建。 我該怎麼做？

謝謝！

Answer 1

open 1, 2, 3 activities 
1 > 2 > 3 

back to #2 
1 > 2   // call startActivity for 2, don't call finish() in 3 

open #4 activity 
1 > 2 > 4 

back to #2 
1 > 2 

restore #3 activity 
1 > 2 > 3  // call startActivity for 3 with intent as Intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_To_FRONT);